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cargo-sonarThis week's crate is starship, a fast featureful customizable UNIX terminal prompt.
Thanks to matchai for the suggestion!
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273 pull requests were merged in the last week
asm!String conversioncopy(_nonoverlapping) debug-checksCopy typesCopy/Clone compiler magic on arrays with library implsBinaryHeap::extend from VecEq and Hash for Path/PathBufconst_raw_ptr_deref for *const Tformat_args!Simd::from_slicedeprecated_cfg_attrexplicit_counter_loop suggestion for non-usize typessemicolon_if_nothing_returned FP on let-else stmtsredundant_pattern_matchingcast_losslesslet_underscore_lock also detect parking_lot locksindex_refutable_slice to avoid slice indexingswap lints now check if there is no_std or no_core attributeoption_if_let_else: don't expand macros in suggestionA large amount of noise in the comparisons this week, likely due to new probabilistic query hash verification increasing likelihood of changes in each benchmark; solutions are being tracked in rustc-perf#1105.
Otherwise, though, the week largely amounted to a neutral one for performance. There were some regressions, particularly in doc builds, as a result of the addition of portable SIMD. These are relatively speaking minor and primarily impact small crates.
Triage done by @simulacrum. Revision range: eee8b9c7..934624f
5 Regressions, 2 Improvements, 6 Mixed; 2 of them in rollups
41 comparisons made in total
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If a normal add is a waffle iron , SIMD add is a double or quadruple waffle iron. You can make 2 or 4 or more waffles at the same time.
In case of waffles it would be called SIMW: S ingle I ron, M ultiple W affles.
It's not multithreading - because you open and close the waffle iron for all the waffles at the same time.
Editors note: Do yourself a favor, click the link and read the whole thread, it's pure gold (chef's kiss).
Thanks to Stephan Sokolow for the suggestion!
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This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, andrewpollack, U007D, kolharsam, joelmarcey, marriannegoldin.
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